--- Rules.mak
+++ Rules.mak
@@ -413,6 +413,7 @@
 
 ifeq ($(TARGET_ARCH),mips)
 	OPTIMIZATION+=-mno-split-addresses
+	CPU_CFLAGS-y+=$(strip $(MIPS_CUSTOM_ARCH_CPU_CFLAGS))
 	CPU_CFLAGS-$(CONFIG_MIPS_N64_ABI)+=-mabi=64
 	CPU_CFLAGS-$(CONFIG_MIPS_O32_ABI)+=-mabi=32
 	CPU_CFLAGS-$(CONFIG_MIPS_N32_ABI)+=-mabi=n32